How to use UISS & Direwolf for APRS of SAKURA
I succeeded to use the APRS of SAKURA, the cubesat by Chiba Institute of Technology.
https://sites.google.com/p.chibakoudai.jp/gardens-03/home-english?authuser=0
I explain here how I use the APRS of SAKURA.
My system:
1 TRX
Yaesu FT-847M Output 50W
2 Antenna
10 ele Yagi-Uda, vertical polarization
3 PC
Note PC with Ubuntu OS
4 Softwares
Tracking: Gpredict+hamlib(rigctld)
Packet: Direwolf+UISS(with Wine)+Tunaterm(for saving KISS file logs)
Settings:
1 TRX
SPLIT mode
TX frequency: 145.825MHz fixed
RX frequency: controlled by Gpredict+hamlib(rigctld)
Note:
I think the symplex mode is good for this purpose.
In this case, you need not to controll either the TX or the RX frequency, but both to fix on 145.825MHz.
2 Antenna
I manually control the elevation and the direction of my antenna according to the Gpredict.
3 Direwolf
Install it in a convenient directory of PC and pepare Direwolf.conf file in my user's directory.
To start Direwolf, open new terminal and type "direwolf".
Note: In case of Windows PC, install in any convenient folder and make shortcut.
The Direwolf.conf file is to be put in the same folder in that Direwolf is installed.
Prepare the "Direwolf.conf" file like as:
ADEVICE 0
ARATE 48000
CHANNEL 0
MYCALL JI1IZR
MODEM 1200
PTT /dev/ttyUSB0 RTS
AGWPORT 8000
KISSPORT 8001
IGTXLIMIT 6 10
Note:
You must change "JI1IZR" as your callsign.
You must fit the serial port number, "ttyUSB0", to your PC.
When you use Direwolf on Windows, you must modify "PTT /dev/ttyUSB0 RTS" as "PTT COM3 RTS".
In this case, you must also fit the serial port number, "COM3", to your PC.
4 UISS
(1) Start Direwolf before you start UISS.
(2) When you start UISS for the first time after you installed, you must set your callsign and click "OK".
(3) UISS says "Cannot connect to a 'software modem'", then click "cancel".
(4) Restart UISS.
(5) UISS says "Cannot connect to a 'software modem'" again, but UISS asks you "Do you want to run UISS anyway?"
In this time, click "Yes".
(6) Click "Setup", "UISS".
(7) Select "Main" tab and check your callsign here.
(8) Select "APRS" tab and click "Setup your APRS Coordinates &Icon".
(9) Set your Latitude and Longitude, then save settings. You can also put your Grid Square and click "Convert".
Click the check-mark button as save your settings. UISS asks "Is this correct?", then click "Yes".
Note: If you do not set your position here, you cannnot use "F6 Position" button.
(10) Select "LAN" tab and put a check mark on "Enable LAN Mode", then click the check -mark button as save settings.
UISS says "Please restart UISS to activate the LAN MODE", then click "OK".
(11) Click check-mark button as save all settings.
(12) Restart UISS.
Note: In case Direwolf does not work before restart UISS, restart Direwolf before starting UISS.
(13) Click "F5/Text data" button, you can see your message on the "monitor" window.
(14) When you use SAKURA APRS, modify "Via: ARISS" as "Via: JS1YNI", the callsign of SAKURA.
Then click again "F5/Text data" button, you can see "Via JS1YNI" instead of "Via ARISS".
(15) UISS shows both the TX and RX AX.25 packet data on the "monitor". Even if your TX data does not be digipeated via satellite, you can see your TX data on the "monitor".
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